<div class="contact-fp-wrap">
  <svg height="60" width="320" xmlns="http://www.w3.org/2000/svg">
    <defs>
   <linearGradient id="logo-gradient" x1="50%" y1="0%" x2="75%" y2="100%" > 
            
            <stop offset="0%" stop-color="#F79533">
                <animate attributeName="stop-color" values="#F79533; #F37055; #EF4E7B; #A166AB; #5073B8; #1098AD; #07B39B; #6DBA82; #F79533" dur="4s" repeatCount="indefinite"></animate>
            </stop>

            <stop offset="100%" stop-color="#F79533">
                <animate attributeName="stop-color" values="#F37055; #EF4E7B; #A166AB; #5073B8; #1098AD; #07B39B; #6DBA82; #F79533; #F37055" dur="4s" repeatCount="indefinite"></animate>
            </stop>

        </linearGradient> 
  </defs>
    <rect class="booton" height="60" width="320" />
  </svg>
   <div class="booton-text">HOVER</div>
</div>

html, body {
  background: #333;
  height: 100%;
  overflow: hidden;
  text-align: center;
}

.contact-fp-wrap {
  height: 60px;
	margin: 0 auto;
  position: relative;
  top: 50%;
  transform: translateY(-50%);
  width: 320px;
}

.booton {
  fill: transparent;
  stroke-dasharray: 140 540;
  stroke-dashoffset: -474;
  stroke-width: 4px;
  stroke: url('#logo-gradient');
}

.booton-text {
  color: #fff;
  font-family: 'Lato';
  font-size: 22px;
  letter-spacing: 8px;
  line-height: 32px;
  position: relative;
  top: -48px;
}

@keyframes draw {
  0% {
    stroke-dasharray: 140 540;
    stroke-dashoffset: -474;
    stroke-width: 6px;
  }
  100% {
    stroke-dasharray: 760;
    stroke-dashoffset: 0;
    stroke-width: 2px;
  }
}

.contact-fp-wrap:hover .booton {
  cursor: pointer;
  -webkit-animation: 0.5s draw linear forwards;
  animation: 0.5s draw linear forwards;
}