.form-group {
    margin-bottom: 20px;
}

.input-container {
    position: relative;
}

    .input-container input,
    .input-container select,
    .input-container textarea {
        width: 100%;
        padding-right: 30px;
    }

.tick {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: green;
    font-size: 15px;
    display: none;
}

.error {
    color: red;
    font-size: 12px;
    display: block;
    margin-top: 5px;
}