.logo-center > a {
    display: flex;
}

    .logo-center > a > img {
        height: 100px !important;
        margin-left: auto;
        margin-right: auto;
    }

.sign-up-btn {
    color: white !important;
    background: #89a8eb !important;
    border: white !important;
}

    .sign-up-btn:hover {
        color: white !important;
        background: #789ded !important;
        border: white !important;
    }

    .sign-up-btn::after {
        background: #789ded !important;
    }

    input.require {
        border-bottom: 2px solid #ccc;
    }

    input.require.error {
        border-bottom: 2px solid #e74c3c; /* red */
    }

    input.require:focus {
        outline: none;
        border-bottom: 2px solid #3498db; /* blue */
    }