body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

h1, h2 {
    color: #333;
}

form {
    margin-bottom: 20px;
}

.data {
    border-collapse: collapse;
    width: 100%;
    margin-top: 20px;
    box-shadow: 0 5px 10px rgba(0,0,0,0.1);
}

.data th, .data td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
    white-space: nowrap;
}

.data th {
    /* background-color: #f2f2f2; */
    background-color: #f0f8ff;
}

.data tr:nth-child(even) {
    /* background-color: #f9f9f9; */
    background-color: rgba(240,248,255,0.35);
}

.data tr:hover {
  /* background-color: #ddd; Hiệu ứng khi hover */
  background-color: rgba(240,248,255,0.86);
}

#drop-area {
    border: 2px dashed #ccc;
    border-radius: 20px;
    width: 300px;
    height: 150px;
    padding: 20px;
    text-align: center;
    margin: 20px auto;
    transition: background-color 0.3s;
}
#drop-area.hover {
    background-color: #f0f8ff;
}
#fileElem {
    display: none;
}
#file-label {
    cursor: pointer;
}