odd spacing around the Submit button

I am trying to apply CSS formatting to a table that is generated in Active Campaign.

There is an odd spacing around the Submit button and I am trying to get the top of the button to line up with the text fields next to it.

Can anyone help with this?

Below is an image of the form and the HTML source code

<style>@import url(https://fonts.bunny.net/css?family=ibm-plex-sans:400,600);</style>
<style>
   #_form_6_{font-size:14px;line-height:1.6;font-family:arial, helvetica, sans-serif;margin:0}#_form_6_ *{outline:0}._form_hide{display:none;visibility:hidden}._form_show{display:block;visibility:visible}#_form_6_._form-top{top:0}#_form_6_._form-bottom{bottom:0}#_form_6_._form-left{left:0}#_form_6_._form-right{right:0}#_form_6_ input[type="text"],#_form_6_ input[type="tel"],#_form_6_ input[type="date"],#_form_6_ textarea{padding:6px;height:auto;border:#979797 1px solid;border-radius:4px;color:#000000 !important;font-size:14px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}#_form_6_ textarea{resize:none}#_form_6_ ._submit{-webkit-appearance:none;cursor:pointer;font-family:arial, sans-serif;font-size:14px;text-align:center;background:#004CFF !important;border:0 !important;-moz-border-radius:4px !important;-webkit-border-radius:4px !important;border-radius:4px !important;color:#FFFFFF !important;padding:10px !important}#_form_6_ ._submit:disabled{cursor:not-allowed;opacity:0.4}#_form_6_ ._submit.processing{position:relative}#_form_6_ ._submit.processing::before{content:"";width:1em;height:1em;position:absolute;z-index:1;top:50%;left:50%;border:double 3px transparent;border-radius:50%;background-image:linear-gradient(#004CFF, #004CFF), conic-gradient(#004CFF, #FFFFFF);background-origin:border-box;background-clip:content-box, border-box;animation:1200ms ease 0s infinite normal none running _spin}#_form_6_ ._submit.processing::after{content:"";position:absolute;top:0;bottom:0;left:0;right:0;background:#004CFF !important;border:0 !important;-moz-border-radius:4px !important;-webkit-border-radius:4px !important;border-radius:4px !important;color:#FFFFFF !important;padding:10px !important}@keyframes _spin{0%{transform:translate(-50%, -50%) rotate(90deg)}100%{transform:translate(-50%, -50%) rotate(450deg)}}#_form_6_ ._close-icon{cursor:pointer;background-image:url("https://d226aj4ao1t61q.cloudfront.net/esfkyjh1u_forms-close-dark.png");background-repeat:no-repeat;background-size:14.2px 14.2px;position:absolute;display:block;top:11px;right:9px;overflow:hidden;width:16.2px;height:16.2px}#_form_6_ ._close-icon:before{position:relative}#_form_6_ ._form-body{margin-bottom:30px}#_form_6_ ._form-image-left{width:150px;float:left}#_form_6_ ._form-content-right{margin-left:164px}#_form_6_ ._form-branding{color:#fff;font-size:10px;clear:both;text-align:left;margin-top:30px;font-weight:100}#_form_6_ ._form-branding ._logo{display:block;width:130px;height:14px;margin-top:6px;background-image:url("https://d226aj4ao1t61q.cloudfront.net/hh9ujqgv5_aclogo_li.png");background-size:130px auto;background-repeat:no-repeat}#_form_6_ .form-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0, 0, 0, 0);border:0}#_form_6_ ._form-label,#_form_6_ ._form_element ._form-label{font-weight:bold;margin-bottom:5px;display:block}#_form_6_._dark ._form-branding{color:#333}#_form_6_._dark ._form-branding ._logo{background-image:url("https://d226aj4ao1t61q.cloudfront.net/jftq2c8s_aclogo_dk.png")}#_form_6_ ._form_element{position:relative;margin-bottom:10px;font-size:0;max-width:100%}#_form_6_ ._form_element *{font-size:14px}#_form_6_ ._form_element._clear{clear:both;width:100%;float:none}#_form_6_ ._form_element._clear:after{clear:left}#_form_6_ ._form_element input[type="text"],#_form_6_ ._form_element input[type="date"],#_form_6_ ._form_element select,#_form_6_ ._form_element textarea:not(.g-recaptcha-response){display:block;width:100%;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;font-family:inherit}#_form_6_ ._field-wrapper{position:relative}#_form_6_ ._inline-style{float:left}#_form_6_ ._inline-style input[type="text"]{width:150px}#_form_6_ ._inline-style:not(._clear)+._inline-style:not(._clear){margin-left:20px}#_form_6_ ._form_element img._form-image{max-width:100%}#_form_6_ ._form_element ._form-fieldset{border:0;padding:0.01em 0 0 0;margin:0;min-width:0}#_form_6_ ._clear-element{clear:left}#_form_6_ ._full_width{width:100%}#_form_6_ ._form_full_field{display:block;width:100%;margin-bottom:10px}#_form_6_ input[type="text"]._has_error,#_form_6_ textarea._has_error{border:#F37C7B 1px solid}#_form_6_ input[type="checkbox"]._has_error{outline:#F37C7B 1px solid}#_form_6_ ._error{display:block;position:absolute;font-size:14px;z-index:10000001}#_form_6_ ._error._above{padding-bottom:4px;bottom:39px;right:0}#_form_6_ ._error._below{padding-top:8px;top:100%;right:0}#_form_6_ ._error._above ._error-arrow{bottom:-4px;right:15px;border-left:8px solid transparent;border-right:8px solid transparent;border-top:8px solid #FFDDDD}#_form_6_ ._error._below ._error-arrow{top:0;right:15px;border-left:8px solid transparent;border-right:8px solid transparent;border-bottom:8px solid #FFDDDD}#_form_6_ ._error-inner{padding:12px 12px 12px 36px;background-color:#FFDDDD;background-image:url("data:image/svg+xml,%3Csvg width="16" height="16" viewBox='0 0 16 16' fill="none" xmlns="http://www.w3.org/2000/svg"%3E%3Cpath fill-rule="evenodd" clip-rule="evenodd" d='M16 8C16 12.4183 12.4183 16 8 16C3.58172 16 0 12.4183 0 8C0 3.58172 3.58172 0 8 0C12.4183 0 16 3.58172 16 8ZM9 3V9H7V3H9ZM9 13V11H7V13H9Z' fill="%23CA0000"/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:12px center;font-size:14px;font-family:arial, sans-serif;font-weight:600;line-height:16px;color:#000;text-align:center;text-decoration:none;-webkit-border-radius:4px;-moz-border-radius:4px;border-radius:4px;box-shadow:0px 1px 4px rgba(31, 33, 41, 0.298295)}@media only screen and (max-width:319px){#_form_6_ ._error-inner{padding:7px 7px 7px 25px;font-size:12px;line-height:12px;background-position:4px center;max-width:100px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}}#_form_6_ ._error-inner._form_error{margin-bottom:5px;text-align:left}#_form_6_ ._button-wrapper ._error-inner._form_error{position:static}#_form_6_ ._error-inner._no_arrow{margin-bottom:10px}#_form_6_ ._error-arrow{position:absolute;width:0;height:0}#_form_6_ ._error-html{margin-bottom:10px}.pika-single{z-index:10000001 !important}#_form_6_ input[type="text"].datetime_date{width:69%;display:inline}#_form_6_ select.datetime_time{width:29%;display:inline;height:32px}#_form_6_ input[type="date"].datetime_date{width:69%;display:inline-flex}#_form_6_ input[type="time"].datetime_time{width:29%;display:inline-flex}@media (min-width:320px) and (max-width:667px){::-webkit-scrollbar{display:none}#_form_6_{margin:0;width:100%;min-width:100%;max-width:100%;box-sizing:border-box}#_form_6_ *{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;font-size:1em}#_form_6_ ._form-content{margin:0;width:100%}#_form_6_ ._form-inner{display:block;min-width:100%}#_form_6_ ._form-title,#_form_6_ ._inline-style{margin-top:0;margin-right:0;margin-left:0}#_form_6_ ._form-title{font-size:1.2em}#_form_6_ ._form_element{margin:0 0 20px;padding:0;width:100%}#_form_6_ ._form-element,#_form_6_ ._inline-style,#_form_6_ input[type="text"],#_form_6_ label,#_form_6_ p,#_form_6_ textarea:not(.g-recaptcha-response){float:none;display:block;width:100%}#_form_6_ ._row._checkbox-radio label{display:inline}#_form_6_ ._row,#_form_6_ p,#_form_6_ label{margin-bottom:0.7em;width:100%}#_form_6_ ._row input[type="checkbox"],#_form_6_ ._row input[type="radio"]{margin:0 !important;vertical-align:middle !important}#_form_6_ ._row input[type="checkbox"]+span label{display:inline}#_form_6_ ._row span label{margin:0 !important;width:initial !important;vertical-align:middle !important}#_form_6_ ._form-image{max-width:100%;height:auto !important}#_form_6_ input[type="text"]{padding-left:10px;padding-right:10px;font-size:16px;line-height:1.3em;-webkit-appearance:none}#_form_6_ input[type="radio"],#_form_6_ input[type="checkbox"]{display:inline-block;width:1.3em;height:1.3em;font-size:1em;margin:0 0.3em 0 0;vertical-align:baseline}#_form_6_ button[type="submit"]{padding:20px;font-size:1.5em}#_form_6_ ._inline-style{margin:20px 0 0 !important}}#_form_6_{position:relative;text-align:left;margin:25px auto 0;padding-top:20px;padding-right:20px;padding-bottom:20px;padding-left:20px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;background:#FFFFFF !important;border:0px solid #B0B0B0 !important;-moz-border-radius:0px !important;-webkit-border-radius:0px !important;border-radius:0px !important;color:#000000}#_form_6_._inline-form,#_form_6_._inline-form ._form-content{font-family:"IBM Plex Sans", Helvetica, sans-serif}#_form_6_._inline-form ._row span,#_form_6_._inline-form ._row label{font-family:"IBM Plex Sans", Helvetica, sans-serif;font-size:14px;font-weight:400;line-height:1.6em}#_form_6__inlineform input[type="text"],#_form_6__inlineform input[type="date"],#_form_6__inlineform input[type="tel"],#_form_6__inlineform select,#_form_6__inlineform textarea:not(.g-recaptcha-response){font-family:"IBM Plex Sans", Helvetica, sans-serif;font-size:14px;font-weight:400;font-color:#000000;line-height:1.6em}#_form_6_._inline-form ._html-code *:not(h1, h2, h3, h4, h5, h6),#_form_6_._inline-form ._form-thank-you{font-family:"IBM Plex Sans", Helvetica, sans-serif}#_form_6_._inline-form ._form-label,#_form_6_._inline-form ._form-emailidentifier,#_form_6_._inline-form ._form-checkbox-option-label{font-family:"IBM Plex Sans", Helvetica, sans-serif;font-size:14px;font-weight:700;line-height:1.6em}#_form_6_._inline-form ._submit{margin-top:12px;font-family:"IBM Plex Sans", Helvetica, sans-serif}#_form_6_._inline-form ._html-code h1,#_form_6_._inline-form ._html-code h2,#_form_6_._inline-form ._html-code h3,#_form_6_._inline-form ._html-code h4,#_form_6_._inline-form ._html-code h5,#_form_6_._inline-form ._html-code h6,#_form_6_._inline-form ._form-title{font-size:22px;line-height:normal;font-weight:600;margin-bottom:0}#_form_6_._inline-form ._form-branding{font-family:"IBM Plex Sans", Helvetica, sans-serif;font-size:13px;font-weight:100;font-style:normal;text-decoration:none}#_form_6_:before,#_form_6_:after{content:" ";display:table}#_form_6_:after{clear:both}#_form_6_._inline-style{width:auto;display:inline-block}#_form_6_._inline-style input[type="text"],#_form_6_._inline-style input[type="date"]{padding:10px 12px}#_form_6_._inline-style button._inline-style{position:relative;top:27px}#_form_6_._inline-style p{margin:0}#_form_6_._inline-style ._button-wrapper{position:relative;margin:27px 12.5px 0 20px}#_form_6_ ._form-thank-you{position:relative;left:0;right:0;text-align:center;font-size:18px}#_form_6_ ._form-pc-confirmation ._submit{margin-top:16px}@media (min-width:320px) and (max-width:667px){#_form_6_._inline-form._inline-style ._inline-style._button-wrapper{margin-top:20px !important;margin-left:0 !important}}#_form_6_ .iti.iti--allow-dropdown.iti--separate-dial-code{width:100%}#_form_6_ .iti input{width:100%;height:32px;border:#979797 1px solid;border-radius:4px}#_form_6_ .iti--separate-dial-code .iti__selected-flag{background-color:#FFFFFF;border-radius:4px}#_form_6_ .iti--separate-dial-code .iti__selected-flag:hover{background-color:rgba(0, 0, 0, 0.05)}#_form_6_ .iti__country-list{border-radius:4px;margin-top:4px;min-width:460px}#_form_6_ .iti__country-list--dropup{margin-bottom:4px}#_form_6_ .phone-error-hidden{display:none}#_form_6_ .phone-error{color:#E40E49}#_form_6_ .phone-input-error{border:1px solid #E40E49 !important}#_form_6_._inline-form ._form-content ._form-list-subscriptions-field fieldset{margin:0;margin-bottom:1.1428571429em;border:none;padding:0}#_form_6_._inline-form ._form-content ._form-list-subscriptions-field fieldset:last-child{margin-bottom:0}#_form_6_._inline-form ._form-content ._form-list-subscriptions-field legend{margin-bottom:1.1428571429em}#_form_6_._inline-form ._form-content ._form-list-subscriptions-field label{display:flex;align-items:flex-start;justify-content:flex-start;margin-bottom:0.8571428571em}#_form_6_._inline-form ._form-content ._form-list-subscriptions-field label:last-child{margin-bottom:0}#_form_6_._inline-form ._form-content ._form-list-subscriptions-field input{margin:0;margin-right:8px}#_form_6_._inline-form ._form-content ._form-list-subscriptions-field ._form-checkbox-option-label{display:block;font-weight:400;margin-top:-4px}#_form_6_._inline-form ._form-content ._form-list-subscriptions-field ._form-checkbox-option-label-with-description{display:block;font-weight:700;margin-top:-4px}#_form_6_._inline-form ._form-content ._form-list-subscriptions-field ._form-checkbox-option-description{margin:0;font-size:0.8571428571em}#_form_6_._inline-form ._form-content ._form-list-subscriptions-field ._form-subscriptions-unsubscribe-all-description{line-height:normal;margin-top:-2px}
   #_form_6_ ._form-content{margin:0px}#_form_6_ ._inline-style{background-color:red !important;padding:20px;align-items:flex-start !important;margin:0px}#_form_6_ ._button-wrapper{margin:0px}#_form_6_ ._clear-element{padding:100px}#_form_6_ ._submit{background-color:green !important;align-items:flex-start !important;padding:0px;margin:0px;margin-top:0px}#_form_6_ ._submit:hover{background-color:#336699 !important;vertical-align:top !important}
</style>
<div style="text-align: center;">
<form method="POST" action="https://test.activehosted.com/proc.php" id="_form_6_" class="_form _form_6 _inline-form _inline-style _dark" novalidate data-styles-version="5">
   <input type="hidden" name="u" value="6" />
   <input type="hidden" name="f" value="6" />
   <input type="hidden" name="s" />
   <input type="hidden" name="c" value="0" />
   <input type="hidden" name="m" value="0" />
   <input type="hidden" name="act" value="sub" />
   <input type="hidden" name="v" value="2" />
   <input type="hidden" name="or" value="72587e62d908ab1759a2605168bff55e" />
   <div class="_form-content">
      <div class="_form_element _x10761716 _inline-style _clear" >
         <div class="_form-title">
            Subscribe for Email Updates
         </div>
      </div>
      <div class="_form_element _x01021406 _inline-style _clear" >
         <div class="_html-code">
            <p>
               Add a descriptive message telling what your visitor is signing up for here.
            </p>
         </div>
      </div>
      <div class="_form_element _x28186885 _inline-style " >
         <label for="fullname" class="_form-label">
         Full Name
         </label>
         <div class="_field-wrapper">
            <input type="text" id="fullname" name="fullname" placeholder="Type your name" />
         </div>
      </div>
      <div class="_form_element _x31207561 _inline-style " >
         <label for="email" class="_form-label">
         Email*
         </label>
         <div class="_field-wrapper">
            <input type="text" id="email" name="email" placeholder="Type your email" required/>
         </div>
      </div>
      <div class="_button-wrapper _inline-style">
         <button id="_form_6_submit" class="_submit" type="submit">
         Submit
         </button>
      </div>
      <div class="_clear-element">
      </div>
   </div>
   <div class="_form-thank-you" style="display:none;">
   </div>
   <div class="_form-branding">
      <div class="_marketing-by">
         Marketing by
      </div>
      <a href="https://www.activecampaign.com/?utm_medium=referral&utm_campaign=acforms" class="_logo">
      <span class="form-sr-only">
      ActiveCampaign
      </span>
      </a>
   </div>
</form>
</div>

Active Campaign automatically generates the forms, and they have a section that allows you to add custom CSS coding that will "override" default styling.

._form-content{
  margin:0px;
}

._inline-style{
  background-color: red  !important;
  padding: 0px;
  align-items: flex-start !important;
  vertical-align: top !important;
  margin: 0px;
}

._button-wrapper{
  margin:0px;
}

._submit {
  background-color: green  !important;
  vertical-align: top !important;
  padding: 0px;
  margin: 0px;
}

._submit:hover {
  background-color: #336699  !important;
  vertical-align: top !important;
}

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