html, body, header, div, span, a, h1, h2, h3, p, img{
  margin: 0;
  padding: 0;
  border: 0;
  outline: 0;
  font-size: 100%;
  vertical-align: baseline;
  background: transparent;
  line-height: 1em;
  font-weight: normal;
}
div, a, span, li, p span, label span{
  font-size: 14px;
}
p{
  font-size: 15px;
}

span{
  font-family: "ヒラギノ角ゴ Pro", "Hiragino Kaku Gothic Pro", "メイリオ", "Meiryo", sans-serif;
}
#app-root {
  justify-content: space-around;
}
.main {
  width: 90%;
  max-width: 820px;
  min-width: 280px;
  min-height: calc(100vh - 50px);
  margin: 0 auto;
  padding: 20px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.main-message-area {
  color: #171717;
}
h1{
  font-size: 24px;
  position: relative;
  padding-left: 1.5em;
  padding-bottom: 20px;
  border-bottom: 1px solid #999;
}
h1:before{
  position: absolute;
  content: "";
  left: 0;
  background-color: rgba(0,0,0,0);
  border-bottom: solid 22px #f0c033;;
  border-left: solid 15px transparent;
  border-right: solid 15px  transparent;
}
h1:after{
  position: absolute;
  content: "!";
  line-height: 0;
  color: #ffffff;
  font-size: 16px;
  text-indent: 0;
  width: 30px;
  text-align: center;
  left: 0;
  top: 0.85em;
}
.sub-message-area {
  margin-top: 30px;
  margin-bottom: 30px;
}
.sub-message-area span {
 font-size: smaller;
 font-weight: normal;
 line-height: 1.8em;
}
.cause-area {
  padding: 20px;
  margin-bottom: 30px;
  border-radius: 5px;
  background-color: #e6e6e6;
}
ol {
  margin-bottom: 10px;
  padding: 0;
}
.cause-area >li {
  font-size: smaller;
  line-height: 1.8em;
}
.cause-area >span {
  font-size: smaller;
  font-weight: normal;
  color: black;
  margin-bottom: 10px;
}
.button-area {
  width: 100%;
  display: flex;
  margin: 20px auto 0;
  width: 100%;
  justify-content: center;
}
.button {
  cursor: pointer;
  max-width: 240px;
  height: 38px;
  padding: 0 1em;
  border: none;
  border-radius: 5px;
  background-color: hsla(0,0%,9%,.6)!important;
  box-shadow: 0 3px 0 hsla(0,0%,9%,.8)!important;
  color: #ffffff;
  font-size: smaller;
  margin-right: 1em;
}
.button:last-child{
  margin-right: 0;
}
.button:active{
  box-shadow: none !important;
  transform: translateY(3px);
}
span {
  font-weight: bold;
  font-size: small;
  line-height: 1.8em;
}
li {
  font-size: smaller;
  line-height: 1.8em;
}

@media (max-width: 768px){
  .main {
    min-height: calc(100vh - 80px);
  }
}