BODY,DIV,TABLE,THEAD,TBODY,TFOOT,TR,TH,TD,P,ul,li{ 
    font-family:"Times New Roman"; font-size:x-small ;
}
body{
    text-align: center;
    display: block;
    margin-left: auto;
    margin-right: auto;
}
SVG {
    display: block;
    margin-left: auto;
    margin-right: auto;
 }

h1 h3 p a div{ 
        text-align: center ;
    }   

.container {
        display: flex;
        justify-content: center;
        align-items: center;
      }

svg,script {
        margin:  auto;  /* ボックス中央寄せ */
    }