body {
   display: flex;
   flex-direction: column;
   justify-content: center;
   align-items: center;
}

main {
   width: 400px;
   height: 100vh;
   display: flex;
   flex-direction: column;
   justify-content: center;
   align-items: center;
}

section {
   width: 400px;
   display: flex;
   flex-direction: column;
   justify-content: center;
   align-items: center;
}

#editor {
   width: 100%;
   height: 35vh;
   margin-bottom: 20px;
   overflow: auto;
}

#preview {
   width: 100%;
   height: 35vh;
   border: 1px dashed black;
   padding: 2px;
   overflow: auto;
}