body {background: url("../f/17.avif") no-repeat fixed; background-size: 100% 100%; color: rgb(140,140,140);}
.dropdown div {background-color: rgb(25,35,40);}
summary:hover, .dropdown a:hover {color:white;  background-color: rgb(25,35,40);}
summary:active, summary:focus, .dropdown a:active, .dropdown a:focus {color: white; background-color: rgb(25,35,40);}
.div3 p, .color, .gazprom {color: white;}
.div2 a:hover {color:white;}
.div2 a:active {font-size: 1.1em;}
.div2 a:focus {color: white;}
.gazprom {background-color: rgba(10, 10, 10, .3); border: 2px solid rgb(50,50,70);}
.accordion  {background-color: rgb(15,23,29);}
.accordion:hover {color: white;}
.accordion:after {content: '\276F'; font-size: 85%; transition: transform .2s; transform: rotate(90deg); float: right;}
.accordion:hover:after {color: white;}