.register-a {

    background-color: #ff0203;
    -webkit-border-radius: 60px;
    border-radius: 60px;
    border: none;
    color: #ffffff;
    cursor: pointer;
    display: inline-block;
    font-size: 20px;
    padding: 10px 10px;
    text-align: center;
    text-decoration: none;
    font-family: 'Lucida Grande';
}

.register-a:hover {
    box-shadow: 1px 5px 10px;
        color: #000;
        background-color: #ff0203;
}

@media (max-width: 767px) {

    .register-a {

        font-size: 16px;
    
    }

}

@media (max-width: 575px) {

    .register-a {

        width: 30px;
        height: 35px;
        margin-left: -5px;
        margin-top: -15px; 
        font-size: 12px;
        padding: 8px 8px;
        margin-bottom: 10px;
    }

}

/*
@keyframes glowing {
    0% {
        background-color: #ff0203;
        box-shadow: 0 0 5px #ff0203;
    }

    50% {
        background-color: #ff0203;
        box-shadow: 0 0 20px #ff0203;
    }

    100% {
        background-color: #ff0203;
        box-shadow: 0 0 5px #ff0203;
    }
}

.register-a {
    animation: glowing 1300ms infinite;
}*/