/* General Reset */
body {
    margin: 0;
    padding: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    color: #333;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    color: #2c3e50;
    margin-top: 1em;
}

/* Paragraphs */
p {
    line-height: 1.6;
    margin-bottom: 1em;
}

/* Links */
a {
    color: #2980b9;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* Lists */
ul, ol {
    padding-left: 2em;
}
dl dt {
    font-weight: bold;
}
dl dd {
    margin-bottom: 0.5em;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-top: 10px;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1em;
    background-color: #ffffff;
}
th, td {
    border: 1px solid #ccc;
    padding: 10px;
    text-align: left;
}
th {
    background-color: #ecf0f1;
}

/* Forms */
form {
    background: #ffffff;
    padding: 20px;
    border: 1px solid #dcdcdc;
    border-radius: 8px;
    max-width: 600px;
}
input[type="text"], input[type="email"], textarea, select {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
}
input[type="submit"], input[type="reset"] {
    padding: 10px 20px;
    background-color: #27ae60;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
input[type="submit"]:hover, input[type="reset"]:hover {
    background-color: #2ecc71;
}

/* Semantic Elements */
header, nav, main, aside, footer {
    margin-top: 20px;
    padding: 15px;
    background-color: #eef1f5;
    border: 1px solid #dcdcdc;
    border-radius: 8px;
}
nav ul {
    list-style-type: none;
    padding-left: 0;
}
nav li {
    display: inline;
    margin-right: 15px;
}