* {
    box-sizing: border-box;
}

body {
    margin: 3px 9px;
    color: #000;
    background: #fff;
    font-family: "Times New Roman", serif;
    font-size: 16px;
}

.message-board {
    max-width: 734px;
    margin-inline: auto;
    min-height: calc(100vh - 6px);
    padding: 6px;
    border: 1px solid #d6d6d6;
}

h1 {
    margin: 8px 0 14px;
    font-size: 16px;
    line-height: 19px;
}

#post-form {
    padding-bottom: 6px;
    border-bottom: 1px solid #aaa;
}

.form-row {
    display: flex;
    align-items: center;
    gap: 3px;
    min-height: 17px;
}

label {
    flex-shrink: 0;
}

input,
button {
    font: inherit;
}

input[type="text"] {
    width: 130px;
    padding: 0 2px;
}

input[type="file"] {
    min-width: 0;
    max-width: 100%;
}

button {
    display: block;
    padding: 0 5px;
}

#status {
    margin: 10px 0;
    overflow-wrap: anywhere;
}

.post {
    padding: 10px 0 13px;
    border-bottom: 1px solid #bbb;
}

.post:first-child {
    padding-top: 16px;
}

.post p {
    margin: 0;
    line-height: 17px;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.post img {
    display: block;
    width: auto;
    height: 74px;
    max-width: 100%;
    object-fit: contain;
    object-position: left;
}