h1 {
    font-weight: normal;
    font-size: 34px;
}

form {
      grid-template-columns: auto;
      grid-gap: 10px;
}
form > label, form > .line {
    margin-top: 15px;
}
@media (min-width: 480px) {
    form {
        grid-template-columns: auto 1fr;
        grid-gap: 25px;
    }
    form > label, form > .line {
        margin-top: 0;
    }
}


#message {
    font-size: 16px;
    font-weight: normal;
}


.loader {
    height: 4px;
    width: 100%;
    position: relative;
    overflow: hidden;
    background-color: #ddd;
    display: none;
}
.loader:before{
    display: block;
    position: absolute;
    content: "";
    left: -200px;
    width: 200px;
    height: 4px;
    background-color: #2980b9;
    animation: loading 2s linear infinite;
}
@keyframes loading {
    from {left: -200px; width: 30%;}
    50% {width: 30%;}
    70% {width: 70%;}
    80% { left: 50%;}
    95% {left: 120%;}
    to {left: 100%;}
}