header {
    padding: 0 15px;
}

header img {
    width: 50px;
}

header h2 {
    color: var(--sub);
}

header .btn-sider {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    position: relative;
}

header .btn-sider::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 3px;
    width: 34px;
    height: 4px;
    background-color: var(--sub);
    border-radius: 5px;
    transition: linear 0.3s;
}

header .btn-sider::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 3px;
    width: 34px;
    height: 4px;
    background-color: var(--sub);
    border-radius: 5px;
    transition: linear 0.3s;
}

header .btn-sider.clicked::before {
    transform: rotate(-225deg);
    top: 18px;
}

header .btn-sider.clicked::after {
    transform: rotate(-315deg);
    bottom: 18px;
}

aside {
    position: fixed;
    top: 0;
    right: -240px;
    z-index: 999;
    width: 240px;
    height: 100vh;
    overflow: hidden;
    background-color: var(--main);
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-direction: column;
    gap: 3px;
    transition: linear 0.3s;
}

aside.open {
    transition: linear 0.3s;
    right: 0;
}

aside img {
    width: 50%;
    margin: 0 auto;
}

aside a {
    display: block;
    padding: 5px;
    color: var(--sub);
    position: relative;
    font-weight: 600;
}

aside a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    background-color: var(--sub);
    bottom: 0;
    left: 50%;
    transition: linear 0.3s;
}

aside a:hover::after {
    width: 100%;
    left: 0;
    transition: linear 0.3s;
}