styles.css

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1em;
    text-align: center;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: space-between;
}

nav li {
    margin-right: 20px;
}

nav a {
    color: #fff;
    text-decoration: none;
}

.hero {
    background-image: linear-gradient(to bottom, #333, #444);
    background-size: 100% 300px;
    background-position: 0% 100%;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
}

.hero h1 {
    font-size: 36px;
    margin-bottom: 10px;
}

.hero p {
    font-size: 18px;
    margin-bottom: 20px;
}

.hero.btn {
    background-color: #333;
    color: #fff;
    border: none;
    padding: 10px 20px;
    font-size: 18px;
    cursor: pointer;
}

.accounts {
    background-color: #f7f7f7;
    padding: 20px;
}

.accounts ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.accounts li {
    margin-bottom: 10px;
    padding: 10px;
    border-bottom: 1px solid #ddd;
}

.accounts span {
    font-size: 18px;
    margin-right: 10px;
}

.transactions {
    background-color: #f7f7f7;
    padding: 20px;
}

.transactions ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.transactions li {
    margin-bottom: 10px;
    padding: 10px;
    border-bottom: 1px solid #ddd;
}

.transactions span {
    font-size: 18px;
    margin-right: 10px;
}

footer {
    background-color: #333;
    color: #fff;
    padding: 10px;
    text-align: center;
    clear: both;
}

/* Responsive design */

@media (max-width: