button {
    border-radius:3px;
    color:#ffffff;
    letter-spacing:2px;
    font-size:15px;
    cursor:pointer;
    user-select: none;
    height: 38px;
    line-height: 38px;
    width: auto;
    background:#1e90ff;
    border:1px solid #1e90ff;
}

button:hover {
    color: #dddddd;
    background: blue;
    border: 1px solid blue;
}

.btn-default{
    background:#1e90ff;
    border:1px solid #1e90ff;
}

.btn-default:hover{
    background: blue;
    border: 1px solid blue;
}

.btn-green{
    background: green;
    border: 1px solid green;
}

.btn-green:hover{
    background: #006400FF;
    border: 1px solid #006400FF;
}

.btn-disabled{
    background:#dddddd;
    border:1px solid #dddddd;
    color: #3c3c3c;
}

.go-top {
    font-size: 14px;
    color: rgb(255, 255, 255);
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 50px;
    height: 50px;
    line-height: 50px;
    cursor: pointer;
    border-radius: 25px;
    z-index: 99;
    background-color: rgb(30, 144, 255);
    border: 1px solid rgb(30, 144, 255);
    text-align: center;
}

@media only screen and (max-width: 767px) {
    .go-top {
        right: 2px;
        bottom: 2px;
    }
}