main.css

body {
    font-family: 'Cousine', ;
    padding: 0;
    margin: 0;
    height: 100%;
    width: 100%;
    background: rgba(255, 255, 255, .1);
}

#app {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    /* align items in Main Axis */
    align-items: stretch;
    /* align items in Cross Axis */
    align-content: stretch;
    /* Extra space in Cross Axis */
}

#wrapper {
    position: absolute;
    display: flex;
    width: 100%;
    height: 100%;
}

#parsed-markdown,
#codemirror-target {
    display: flex;
    width: 50%;
    justify-content: flex-start;
    /* align items in Main Axis */
    align-items: stretch;
    /* align items in Cross Axis */
    align-content: stretch;
    /* Extra space in Cross Axis */
}

#parsed-markdown {
    min-width: 200px;
    width: 50%;
    margin: 0 auto;
}

#codemirror-target {
    background: #f9fafa;
}

.markdown-body {
    padding: 30px;
    overflow: auto;
    width: 100%;
}

.CodeMirror {
    font-family: 'Cousine', !important;
    background: #f9fafa !important;
    width: 100% !important;
    cursor: text;
}