body {
    padding: 20px;
    max-width: 600px;
    margin: 0 auto;
}

input {
    width: 100%;
    margin-bottom: 10px;
    font-size: 16px;
    padding: 10px;
}

input[type="date"] {
    max-width: 300px;
}

input[type="text"],
input[type="url"] {
    max-width: 600px;
}

h2 {
    font-size: 16px;
    margin-bottom: 5px;
}

.login,
.add {
    color: #fff;
    background-color: #eb6100;
    border-radius: 0.25em;
    padding: 1em 2em 0.8em;
    line-height: 1;
    display: inline-block;
    border: none;
    min-width: 250px;
}

.del {
    color: #fff;
    background-color: #565656;
    border-radius: 0.25em;
    padding: 5px 10px 05px;
    line-height: 1;
    display: inline-block;
    border: none;
    font-size: 12px;
}

form {
    margin-bottom: 40px;
}

.sp {
    margin-top: 130px;
    margin-bottom: 0px;
}

#article-list {
    padding-left: 17px;
    line-height: 1.4;
}

#article-list li {
    margin-bottom: 15px;
}