*,*::before,*::after{box-sizing:border-box}*{margin:0}
body{-webkit-font-smoothing:antialiased}
img,picture,video,canvas,svg{display:block;max-width:100%}
input,button,textarea,select{font:inherit}
p,h1,h2,h3,h4,h5,h6{overflow-wrap:break-word}
#root,#__next{isolation:isolate}

*{word-break:break-all}
:focus{outline:none}
html{font-size:62.5%}
body{word-wrap:break-word}
a,button{cursor:pointer}
a{text-decoration:none}
img{vertical-align:middle}
p,dl,ul,form{margin:2.5rem 0}
nav ul{list-style:none;padding-left:0}

body{font:500 1.6rem/2.65rem "Yu Gothic",Meiryo,"Hiragino Kaku Gothic ProN",sans-serif;background:#fff;color:#343c52;text-align:center}

a{color:#343c52}.description,footer{margin:100px auto;padding:20px}

.description{width:1024px;max-width:calc(100% - 50px);margin:100px auto;border-radius:5px;background:#e0e5ff}

.description>*:first-child{margin-top:2.5rem}
.description h1{color:#fff}
footer{margin-bottom:0;background:#e0e5ff;font-size:12px}
main{display:block;width:1024px;max-width:calc(100% - 50px);margin:0 auto}

article{margin:0 0 50px;padding:0 0 15px;border:2px solid #a3c4c4;border-radius:5px;background:#fff}

article>*:not(h2){padding:0}

h1{font-size:3.6rme;font-weight:900}

h2,h3,h4{font-size:1.6rem}
h2{margin:0 0 30px;padding:10px 0;background:#e0e5ff}
h3,h4{margin:50px 25px}
h3{padding-bottom:10px !important;border-bottom:2px solid #a3c4c4}
h4{color:#999ca5}
hr{width:90%;margin:auto;border:0;border-bottom:2px solid #e0e5ff}

.blur {
  /* filter: blur(); ~px: ぼかす（にじませる）具合 */
  filter: blur(5px);
}