Responsive Search Form.html

<form class="searchform">
  <input type="text" name="s">
  <input type="submit" value="Search" title="Search Button">
</form>
<style>
.searchform{
  position:relative
}
.searchform input[type="text"]{
  background: #EBEBEB;
  height: auto;
  -webkit-border-radius: 0;
  -moz-border-radius: 0;
  border-radius: 0;
  margin-bottom: 0;
  padding: 7px;
  border: none;
  float: left;
  color: #5F5F5F;
  width: 100%;
  height: 34px;
  float: none;
  padding-right: 70px;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
input[type="submit"]{
  background: #6B6B6B;
  border: none;
  padding: 7px;
  color: #fff;
  height: 34px;
  position: absolute;
  bottom: 0;
  right: 0;
  margin:0
}
</style>