:root {
   --tabs-column-width: 160px;
}

html,
body {
   height: 100%;
}

h2 {
   margin: 0 0 12px 0;
}

h4,
p {
   margin: 0 0 8px 0;
}

.content {
   display: flex;
   height: 100%;
}

.tabs {
   background-color: #fafafa;
   width: var(--tabs-column-width);
   height: 100%;
}

.tabs button {
   width: 100%;
   margin-top: 20px;
   border: none;
   border-radius: 0;
}

.tabs button.active {
   background-color: #0e1031;
   color: #ffffff;
   border: 0px;
}

.tabcontent {
   flex: 1;
}

.page {
   margin-left: 10px;
   justify-content: center;
   display: flexbox;
   width: 90%;
   height: 90%;
}

.page-header {
   display: flex;
   justify-content: center;
}

.file-reading-result {
   font-size: smaller;
   color: gray;
}

/* SELECT TAG */
.grid-container {
   display: grid;
   grid-template-columns: 30vw 30vw;
   grid-column-gap: 30px;
}
.grid-container > div {
   padding: 10px;
}
/* END SELECT TAG */

/* SCROLL */

.scroll {
   overflow: auto;
   display: block;
   width: 50%;
   height: 50%;
   overflow: auto;
   padding: 10px;
   border: 1px solid #ba8;
   margin: 100px auto;
   top: 75%;
   left: 25%;
   position: absolute;
}

.scroll-div {
   overflow: auto;
}

.overlap {
   position: absolute;
   top: 50%;
   left: 50%;
   max-width: 30%;
   max-height: 30%;
   background-color: lightgray;
}

#scroll {
   unicode-bidi: bidi-override;
   direction: rtl;
   display: block;
   width: 300px;
   height: 100px;
   overflow: auto;
   padding: 10px;
   border: 1px solid #ba8;
   margin: 100px auto;
}

/* END SCROLL */