body {
    background-color: #f0f0f0;
}


.material-list{
    border-radius: 20px;
    margin-top: 50px;
}
.material-list ul {
    list-style-type: none;
    padding: 0;
}
.material-list ul li {
    background: white;
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
.material-list ul li a {
    text-decoration: none;
}
.form-inline .form-control {
    display: inline-block;
    width: 90%;
    vertical-align: middle;
}
.form-inline .btn {
    vertical-align: middle;
    width: 9%;
}

.hover-scale{
    transition: transform 0.3s ease;
}

.hover-scale:hover{
    transform: scale(1.03);
}

/* baitap.html */

.nav-item {
    border: black solid 1px;
    border-radius: 10px;
}

.content {
    padding: 2rem;
}