html,body{
    height: auto;
    width: 100%;
    padding: 0;
    margin: 0;
    background-color: #f3f3f2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
pre{
    background: #fff6cc;
    font-size: 14px;
}
.f1{
    background: #ffffff;
    margin: 0 10%;
    height: auto;
    width: 80%;
    color: #222;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 20px;
    font: 18px "Helvetica Neue", Helvetica, Arial, sans-serif;
}
.f2{
    margin:5%;
}
.lisvg{
    position: relative;
}
.lisvg svg{
    width: 35px;
    position: absolute;
    top: -9px;
}
p{
    margin-bottom: 1ch;
    text-indent: 4ch;
}
.ti1{
    margin-top: -1ch;
}
.b1{
    margin-top: 6ch;
    text-align: center;
}
.b1 a{
    text-decoration: none;
    color: #FFFFFF;
    background-color: #007bff;
    padding: 20px 100px;
    font-size: 22px;
    font-weight: bold;
    border-radius: 10px;
    display: block;
}
.b1 a:hover{
    background-color: #005ec7;
}
.b2{
    text-align: center;
    font-size: 16px;
    margin-top: 100px;
}

.acc1{
    overflow: hidden;
}
.acc1 p{
    margin-bottom: 0;
}
.acc1 h2{
    font-size: 1.2em;
    text-decoration: underline dotted blue;
 }
.acc1 img{

    max-width: 80vw;
}











.transition, ul.acc1 li i:before, ul.acc1 li i:after, p {
    transition: all 0.25s ease-in-out;
}

.flipIn, ul.acc1 li, h1 {
    animation: flipdown 0.5s ease both;
}

.no-select, h2 {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}


ul.acc1 {
    list-style: none;
    padding: 0;
    margin: 0;
}
ul.acc1 li {
    position: relative;
    padding: 0;
    margin: 0;
    border-top: 1px dotted #dce7eb;
}
ul.acc1 li:nth-of-type(1) {
    animation-delay: 0.5s;
}
ul.acc1 li:nth-of-type(2) {
    animation-delay: 0.75s;
}
ul.acc1 li:nth-of-type(3) {
    animation-delay: 1s;
}
ul.acc1 li:nth-of-type(4) {
    animation-delay: 1.25s;
}
ul.acc1 li:last-of-type {
    padding-bottom: 0;
}
ul.acc1 li i {
    position: absolute;
    transform: translate(-6px, 0);
    margin-top: 30px;
    right: 20px;
}
ul.acc1 li i:before, ul li i:after {
    content: "";
    position: absolute;
    background-color: #0016ac;
    width: 3px;
    height: 9px;
}
ul.acc1 li i:before {
    transform: translate(-2px, 0) rotate(45deg);
}
ul.acc1 li i:after {
    transform: translate(2px, 0) rotate(-45deg);
}
ul.acc1 li input[type=checkbox] {
    position: absolute;
    cursor: pointer;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0;
}
ul.acc1 li input[type=checkbox]:checked ~ p {
    margin-top: 0;
    max-height: 0;
    opacity: 0;
    transform: translate(0, 50%);
}
ul.acc1 li input[type=checkbox]:checked ~ i:before {
    transform: translate(2px, 0) rotate(45deg);
}
ul.acc1 li input[type=checkbox]:checked ~ i:after {
    transform: translate(-2px, 0) rotate(-45deg);
}

@keyframes flipdown {
    0% {
        opacity: 0;
        transform-origin: top center;
        transform: rotateX(-90deg);
    }
    5% {
        opacity: 1;
    }
    80% {
        transform: rotateX(8deg);
    }
    83% {
        transform: rotateX(6deg);
    }
    92% {
        transform: rotateX(-3deg);
    }
    100% {
        transform-origin: top center;
        transform: rotateX(0deg);
    }
}






@media only screen and (max-width: 1000px) {
    .f1{
        width: 90%;
    }
}


@media only screen and (max-width: 600px) {
    body, html{
        height: auto;
    }
    .f1{
        width: 100%;
        height: 100%;
    }
    .f2{
        margin:20px;
    }
    .b1 a{
        padding: 20px;
        font-size: 20px;
    }
}