body {
    min-width: 375px;
}

.form {
    background: #efefef;
    padding: 30px;
    border-radius: 0 10px 10px;
    border: 1px solid #e5e3e3;
    margin: 0 auto;
}

.form-group:not(:last-child) {
    margin-bottom: 15px;
}

.btn:not(:last-child) {
    margin-bottom: 20px;
}

.qr-code {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-flow: row wrap;
}

.qr-code > :first-child {
    margin-right: 30px;
}

.button-actions {
    display: flex;
    flex-direction: column;
}

.aside-list {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    display: flex;
}

.aside-item__link {
    text-decoration: none;
    color: #212529;
    padding: 15px;
    border-radius: 10px 10px 0 0;

    transition: color 200ms ease-in-out, background-color 200ms ease-in-out, border-color 200ms ease-in-out;
}

.aside-item__link:hover {
    color: #212529;
    background-color: #e5e3e3;
    border-color: #e5e3e3;
}

.aside-item__link:active {
    color: #efefef;
    background-color: #94979a;
    border-color: #94979a;
}

.aside-item__link.active {
    color: #fff;
    background-color: #6c757e;
    border-color: #6c757e;
}

.aside-item {
    font-size: 18px;
    background: #efefef;
    border-top: 1px solid #e5e3e3;
    border-right: 1px solid #e5e3e3;
    padding: 10px 0;
    border-radius: 0 10px 0 0;
}

.aside-item:not(:last-child) {
    border-right: none;
    border-left: 1px solid #e5e3e3;
    border-radius: 10px 0 0 0;
}

@media (max-width: 768px) {
    .qr-code > :first-child {
        margin-right: 0;
        margin-bottom: 30px;
    }

    .form-input {
        margin-bottom: 10px;
    }
}