purelymental-demo/assets/stylesheets/objects/_forms.css.scss

form {
  input[type=text], input[type=password], textarea, input[type=email] {
    margin: 5px;
    font-size: 1em;
    /* padding: 25px 15px; */
    height: 34px;
    color: #404040;
    background: white;
    border: 1px solid;
    border-color: #c4c4c4 #d1d1d1 #d4d4d4;
    border-radius: 2px;
    outline: 5px solid #eff4f7;
    -moz-outline-radius: 3px;
    -webkit-box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.12);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.12);
    margin-bottom: 25px;

    width: 99%; /* all browsers */ 
    width: -moz-calc(100% - 10px); /* Firefox 4+ */ 
    width: calc(100% - 10px); /* IE9+ and future browsers */
    /* 
      Crashing Safari
      width: -webkit-calc(100% - 10px);
      @include experimental-value(width, calc(100% - 10px));
    */
  }

  :-moz-placeholder {
    color: #c9c9c9 !important;
    font-size: 15px;
  }

  ::-webkit-input-placeholder {
    color: #ccc;
    font-size: 15px;
  }

  .input.select {
    select {
      -moz-appearance: none;
      text-indent: 0.01px;
      text-overflow: '';
      background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='50px' height='50px'><polyline points='46.139,15.518 25.166,36.49 4.193,15.519'/></svg>");
      background-color:#EFF4F7;
      background-repeat:no-repeat;
      background-position: right 10px top 15px;
      background-size: 16px 16px;
      color: #333 !important;
      padding:6px;
      padding-right: 40px;
      width:auto;
      font-size:16px;
      font-weight:bold;
      color:#fff;
      text-align:center;
      border-radius:3px;
      -webkit-border-radius:3px;
      -webkit-appearance: none;
      -ms-appearance: none;
      -o-appearance: none;
      appearance: none;
      border: 1px solid #D4D4D4;
      outline:0;
      -webkit-transition:0.3s ease all;
      -moz-transition:0.3s ease all;
      -ms-transition:0.3s ease all;
      -o-transition:0.3s ease all;
      transition:all0.3s ease all;
      &:hover {
        cursor: pointer;
      }
    }
  }
}