wallabag/app/Resources/static/themes/material/css/layout.scss

/* ==========================================================================
   Layout
   ========================================================================== */

body {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  background: #fafafa;

  &.login main {
    padding: 0;
    min-height: 100vh;
  }
}

.border-bottom {
  border-bottom: 1px solid #ddd;
}

main,
#content,
.valign-wrapper {
  height: 100%;
}

#main {
  flex: 1 0 auto;

  .logo {
    a {
      height: 100pt;
    }

    img {
      height: 100pt;
      width: 100pt;
    }

    &:hover {
      background: transparent;
    }
  }
}