h2 {
    margin-bottom: 50px;
}
h3 {
  position: relative;
  padding-bottom: 0px;
  width: 95%;
  font-family: "Yu Gothic", YuGothic, Verdana, 'Hiragino Kaku Gothic ProN','Hiragino Kaku Gothic Pro', 'ヒラギノ角ゴ Pro W3', 'メイリオ', Meiryo, sans-serif;
  font-size: x-large;
  font-weight: 900;
}
h3::before,
h3::after {
  position: absolute;
  bottom: -4px;
  left: 0;
  content: '';
  height: 4px;
}
h3::before {
  z-index: 2;
  width: 15%;
  background-color: #444;
}
h3::after {
  width: 100%;
  background: -webkit-repeating-linear-gradient(45deg, #fff, #fff 2px, #aaa 2px, #aaa 4px);
  background: repeating-linear-gradient(45deg, #fff, #fff 2px, #aaa 2px, #aaa 4px);
}
.hero {
  background-image: url(../image/solv_glove-sp.jpg);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  text-align: center;
  font-family: "Montserrat", sans-serif;
}    
    .contentimage {
        display: inline-block;
        margin-left: 2px;
        margin-right: 2px;
        margin-bottom: 30px;
        width: 100%;
        height: auto;
        border: none;
        max-width: 99%;
        padding: 4px;
        background: #fff;
        box-shadow: 0px 5px 5px rgba(0, 0, 0, 0.7);
    }
.concept {
    margin-top: 300px;
    margin-bottom: 300px;
}
@media (min-width:766px) {
  .hero {
    background-image: url(../image/solv_glove.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    text-align: center;
    font-family: "Montserrat", sans-serif;
  }    
    #main {
        margin-left: auto;
        margin-right: auto;
        max-width: 900px;
    }
    .contenttext {
        width: 48%;
        float: left;
    }
    .contentimage {
        width: 48%;
        float: left;
        display: inline-block;
        margin-left: 2px;
        margin-right: 2px;
        height: auto;
        border: none;
        max-width: 70%;
        padding: 4px;
        background: #fff;
        box-shadow: 0px 5px 5px rgba(0, 0, 0, 0.7);
    }
    #contents {
        clear: both;
        margin-top: 10px;
        margin-bottom: 10px;
    }
}