* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    font-family: sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #ecf0f1;
}

main {
    width: 50%;
    background-color: #fff;
    display: flex;
    flex-direction: column;
    padding: 20px;
    gap: 10px;
}

@media only screen and (max-width: 800px) {
    main {
        width: 100%;
        height: 100%;
    }
    #text {
        height: 100%;
    }
    #corrections {
        max-height: max-content!important;
        height: 100%;
    }
}

main > * {
    width: 100%;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0;
    line-height: 1;
}

ul {
    margin: 0;
}

li {
    margin: 5px 0;
}

a {
    color: #3498db;
}

pre {
    display: inline-block;
    background-color: #fff;
    border: 1px solid #ddd;
    margin: 0;
    font-size: 14px;
}

button,
input,
textarea,
select {
    outline: none;
    border: 1px solid #3498db;
    background-color: transparent;
    padding: 10px 20px;
}

button {
    cursor: pointer;
}

input,
textarea,
select {
    margin: 1px;
}

input:hover,
textarea:hover,
select:hover {
    border-width: 2px;
    margin: 0;
}

button:hover {
    background-color: #3498db;
}

#text {
    min-width: 100%;
}

#corrections {
    display: flex;
    gap: 5px;
    flex-direction: column;
    max-height: 40vh;
    overflow-y: auto;
}

.correction {
    display: flex;
    flex-direction: column;
    align-items: start;
    border-bottom: 1px solid #3498db33;
    padding: 5px;
}

.correction.corrected {
    background-color: #00bb00bb
}

.correction.corrected>* {
    display: none;
}

.correction.corrected:hover>* {
    display: initial;
}

.correction.corrected>h4 {
    display: initial;
}