styles.css

/**
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

.demo-ribbon {
  width: 100%;
  height: 40vh;
  background-color: #3F51B5;
  -webkit-flex-shrink: 0;
      -ms-flex-negative: 0;
          flex-shrink: 0;
}

.demo-main {
  margin-top: -35vh;
  -webkit-flex-shrink: 0;
      -ms-flex-negative: 0;
          flex-shrink: 0;
}

.demo-header .mdl-layout__header-row {
  padding-left: 40px;
}

.demo-container {
  max-width: 1600px;
  width: calc(100% - 16px);
  margin: 0 auto;
}

.demo-content {
  border-radius: 2px;
  padding: 80px 56px;
  margin-bottom: 80px;
}

.demo-layout.is-small-screen .demo-content {
  padding: 40px 28px;
}

.demo-content h3 {
  margin-top: 48px;
}

.demo-footer {
  padding-left: 40px;
}

.demo-footer .mdl-mini-footer--link-list a {
  font-size: 13px;
}

.demo-content form {
  max-width: 550px;
  margin: auto;
}

.alert{padding:15px;margin-bottom:.5rem;border:1px solid transparent;border-radius:.125rem}
.alert-heading{color:inherit}
.alert-link{font-weight:700}
.alert-dismissible{padding-right:35px}
.alert-dismissible .close{position:relative;top:-2px;right:-21px;color:inherit}
.alert-success{background-color:#4caf50;border-color:#449d48;color:#fff}
.alert-success hr{border-top-color:#3d8b40}
.alert-success .alert-link{color:#e6e6e6}
.alert-info{background-color:#03a9f4;border-color:#0391d1;color:#fff}
.alert-info hr{border-top-color:#027fb8}.alert-info .alert-link{color:#e6e6e6}
.alert-warning{background-color:#ff5722;border-color:#ff4409;color:#fff}
.alert-warning hr{border-top-color:#ee3900}
.alert-warning .alert-link{color:#e6e6e6}
.alert-danger{background-color:#f44336;border-color:#f32c1e;color:#fff}
.alert-danger hr{border-top-color:#ea1c0d}
.alert-danger .alert-link{color:#e6e6e6}