/********** Template CSS **********/
.adina-submenu {
    background: linear-gradient(rgba(24, 29, 56, .7), rgba(24, 29, 56, .7)), url(../img/adina-1.jpg);
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
}

input:invalid {
    border: 2px solid red;
  }
  
  input:valid {
    border: 2px solid green;
  }