html { height: 100%; }

body {
  height: 100%;
  font-family: 'Segoe UI', Arial, Tahoma, sans-serif;
  color: var(--text-main);
  background: var(--bg-body);
  font-size: 14px;
  margin: 0;
}

.wrapper {
  max-width: 1250px;
  min-height: 97%;
  background: var(--bg-panel);
  border-top: 3px solid var(--primary);
  border-right: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  border-left: 1px solid var(--border-light);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 16px rgba(46, 58, 89, 0.07);
}

header {
  padding: 4px;
  overflow: auto;
  background: var(--bg-panel);
}

.logo {
  border: 0;
  display: block;
  margin: 3px;
  float: left;
}

.topnav {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  color: #ffffff;
  font-size: 12px;
  background: var(--primary);
  border-top: 0;
  padding: 0;
}

.datetime {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  color: var(--text-muted);
  font-size: 12px;
  background: none !important;
  margin: 6px;
  float: right !important;
}

#middleblock {
  flex: 1 0 auto;
  display: flex;
  flex-direction: row;
}

.leftblock {
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-light);
  padding: 2px;
  flex: 0 0 15%;
}

.mainblock {
  padding: 2px;
  flex: 1 1 100%;
}

main {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-main);
  padding: 15px;
  display: block;
}

.rightblock {
  background: var(--bg-sidebar);
  border-left: 1px solid var(--border-light);
  padding: 2px;
  flex: 0 0 15%;
}

footer {
  background: var(--bg-footer);
  color: var(--text-muted);
  font-size: 12px;
  padding: 10px;
  border-top: 1px solid var(--border-light);
}