static/main.css

body {
  background: #fafafa;
  color: #333333;
  margin-top: 5rem;
}

h1, h2, h3, h4, h5, h6 {
  color: #444444;
}

ul {
  margin: 0;
}

table, th, td {
  border: 1px solid black;
  border-collapse: collapse;
}
th, td {
  padding: 5px 10px 5px 10px;
  text-align: left;
}

.bg-steel {
  background-color: #5f788a;
}

.site-header .navbar-nav .nav-link {
  color: #cbd5db;
}

.site-header .navbar-nav .nav-link:hover {
  color: #ffffff;
}

.site-header .navbar-nav .nav-link.active {
  font-weight: 500;
}

.content-section {
  background: #ffffff;
  padding: 10px 20px;
  border: 1px solid #dddddd;
  border-radius: 3px;
  margin-bottom: 20px;
}

.article-title {
  color: #444444;
}

a.article-title:hover {
  color: #428bca;
  text-decoration: none;
}

.article-content {
  white-space: pre-line;
}

.article-img {
  height: 65px;
  width: 65px;
  margin-right: 16px;
}

.article-metadata {
  padding-bottom: 1px;
  margin-bottom: 4px;
  border-bottom: 1px solid #e3e3e3
}

.article-metadata a:hover {
  color: #333;
  text-decoration: none;
}

.article-svg {
  width: 25px;
  height: 25px;
  vertical-align: middle;
}

.account-img {
  height: 125px;
  width: 125px;
  margin-right: 20px;
  margin-bottom: 16px;
}

.account-heading {
  font-size: 2.5rem;
}

/*columns that floats next to each other */
.column {
  float: left;
  padding: 0px;
  height: 300px; /* Should be removed. Only for demonstration */
}

/* Clear floats after the columns */
.row:after {
  content: "";
  display: table;
  clear: both;
}

.ctrl-box {
  width: 100%;
  justify-content: center;
}

.ctrl-button {
  padding: 1.5px 12px; /* Some padding */
  height:30px;
}

.go-button {
  padding: 1.5px 0.1px;
  height: 30px;
}

.ctrl-button:hover {
  background-color: #C0C0C0;
}

.num-inputer {
  widgh: 100%;
  height:30px;
  resize: none;
}

.btn-ctrl {
  border: 0.8px solid #00A4EF;
  padding: 1.5px;
  height: 30px;
}

.scrolltable { height: 425px; overflow: auto; }
.scrolltable table { border-collapse: collapse; }
.scrolltable tr:nth-child(even) { background: #EEE; }
.scrolltable th div { position: absolute; margin-top: -20px; }