.butn {
    background-color: dodgerblue;
    border: 2px solid #e74c3c;
    border-radius: 0.7em;
    color: #e74c3c;
    cursor: pointer;
    font-size: 16px;
    line-height: 2;
    font-weight: 700;
    text-decoration: none;
    text-align: center;
    /*
    box-sizing: border-box;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    <!-- background-color: transparent; -->

    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-align-self: center;
    -ms-flex-item-align: center;
    align-self: center;
    font-size: 12px;
    
    <!-- font-weight: 400; -->
    <!-- line-height: 2; -->
    <!-- margin: 20px;
    padding: 1.2em 2.8em; -->
  
    <!-- text-transform: uppercase; -->
    font-family: 'Montserrat', sans-serif;
        */
}
.butn:hover, .butn:focus {
  color: #fff;
  outline: 0;
}


.common {
    
    border-color: #3498db;
    color: #fff;
    box-shadow: 0 0 40px 40px #3498db inset, 0 0 0 0 #3498db;
    -webkit-transition: all 150ms ease-in-out;
    transition: all 150ms ease-in-out;
   
}

.common:hover {

  box-shadow: 0 0 10px 0 red inset, 0 0 10px 4px dodgerblue;
}