form {
    width: 70%;
    text-align: center;
}

.form-group {
    padding: 5px;
}

.form-group .btn {
    width: 100%;
    opacity: 0.8;
    transition: 0.3s;
    background-color: #4b61d1 !important;
}

.form-group .btn:hover {
    opacity: 1 !important;
}