body {
    height: 100%;
    }

.testa {
    min-height: 150px;
    max-height: 200px;
    padding: 5px;
    }
.testa img{
    max-width: 480px;
    }
.icon-sm {
    font-size: xx-small;
    color: red;
    vertical-align: text-top;
    }
.red {
    color: red;
    }
.tt {
    color: #17a2b8;
    }
.vert{
    vertical-align: middle;
    }
label {
    text-transform: uppercase;
    }

input:focus:required:invalid {
    background: darkorange 379px 3px no-repeat;
    }
input:required:valid {
    background-color: #fff;
    background-position: 379px -61px;
    }