.result {
    margin: 1rem;
    padding: 0.5rem;
    border-radius: 10px;
    background-color: rgb(200,200,200);
}
main {
    margin: 0 10rem;
    padding: 1rem;
    background-color: rgba(230,230,230);
}
.form {
    display: flex;
    flex-direction: column;
}
.form input{
    width: 20rem;
}
.form button{
    width: 3rem;
}
.copyresult {
    margin: 0;
    pad: 0;
}
pre {
    white-space: pre;      /* 折り返さない */
    overflow-x: auto;      /* 横スクロール */
    font-family: Consolas, Monaco, 'Courier New', monospace;
}