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

header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 8vh;
    background-color: #0e0d0d;
    border-bottom: 1px dashed;
    border-color: yellow;
}

h1 {
    text-align: center;
    color: #ccc
}

main {
    margin-top: 20px;
    display: flex;
    justify-content: center;
}

.box {
    padding: 6px;
    margin: 10px 10px;
    background-color: #0e0d0d;
    box-shadow: 1px 1px 1px 1px rgba(255, 255, 255, 0.5);
    width: 30vw;
    height: auto;
    border-radius: 0.5em;
}

label {
    margin-left: 5px;
    color: #ccc
}

.text-input {
    display: block;
    width: 28vw;
    height: 20vh;
    border-radius: 4px;
    margin: 5px 5px;
    padding: 2px;
    background-color: #333;
    color: white;
}

.btn {
    margin: 10px 5px 10px;
    box-shadow: 2px 2px 2px 1px rgba(0, 0, 0, 0.5);
}

span {
    text-align: right;
    color: #ccc;
    margin-left: 10px;
}

footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 8vh;
    background-color: #0e0d0d;
    text-align: center;
    border-top: 1px dashed;
    border-color: yellow;
}