@import url(https://fonts.googleapis.com/css?family=Montserrat:400,700);

form { max-width:420px; margin:50px auto; }

.feedback-input {
  font-family: Helvetica, Arial, sans-serif;
  font-weight:500;
  font-size: 18px;
  border-radius: 5px;
  line-height: 22px;
  background-color: transparent;
  border:2px solid #5f9200;
  transition: all 0.3s;
  padding: 13px;
  margin-bottom: 15px;
  width:100%;
  box-sizing: border-box;
  outline:0;
}

.feedback-input:focus { border:2px solid #fc3254; }
.feedback-input:valid { background-color: #b5f8a1;}

/* // background-colorでは変わらないため、box-shadowを指定。 */
input:-webkit-autofill {
    box-shadow: 0 0 0 1000px #c1f8a1 inset !important;  
}

/* // 自動補完後のカーソルが黒になるので、合わせて変更。 */
input:-webkit-autofill:focus {
caret-color: #bdf8a1 !important;
}

textarea {
  height: 150px;
  line-height: 150%;
  resize:vertical;
}

[type="submit"] {
  font-family: 'Montserrat', Arial, Helvetica, sans-serif;
  width: 100%;
  background:#4e9200;
  border-radius:5px;
  border:0;
  cursor:pointer;
  color:white;
  font-size:24px;
  padding-top:10px;
  padding-bottom:10px;
  transition: all 0.3s;
  margin-top:-4px;
  font-weight:700;
}
[type="submit"]:hover { background:#c8f500; }