style.css

html{font-size:12px;color:#444;}
*{margin:0; padding:0;}

ul{list-style:none;}

input{border:2px solid #329afa;border-radius:0;margin:0.1em 0.3em;box-sizing:border-box;text-align:right;font-size:1em;padding:0.4em;border-radius:8px;vertical-align:bottom;}
.input4em{width:4em;}
.input20{width:20%}
.input30{width:30%}
.input40{width:40%}
.input50{width:50%}
.input100{width:100%}
.input-em1{width:calc(50% - 5em);}

.left{text-align:left;}
.center{text-align:center;}

.small{font-size:0.5em;font-weight:normal;}



h1{text-align:center;padding:1em;color:#329afa;word-break:keep-all;}
h3{padding:0.5em 0;}
h2{background-color:#329afa;color:#fff;border-radius:10px;text-align:center;word-break:keep-all;padding:0.5em;line-height:40px;height:40px;margin-bottom:0.5em;}
h4{display:inline;}.delete-btn {
    background: none;
    border: none;
    color: #ff4444;
    cursor: pointer;
    font-size: 1.2em;
    padding: 0 5px;
    margin-left: 5px;
}

.delete-btn:hover {
    color: #ff0000;
}

.inblock-item {
    position: relative;
    display: inline-flex;
    align-items: center;
    margin-right: 10px;
}
span.flex-item{display:flex;justify-content:space-between;white-space:nowrap;align-items:flex-end;}
.container{display:flex;justify-content:space-evenly;gap:1rem;}
.container .columnleft{width:30%;border:1px solid #ddd;padding:2em;border-radius:10px;}
.container .columncenter{width:30%;border:1px solid #ddd;padding:2em;border-radius:10px;}  
.container .columnright{width:30%;border:1px solid #ddd;padding:2em;border-radius:10px;}
.container .columnright ul li{padding:0.5em 0;border-bottom:1px solid #ddd;}


@media (max-width:1199px){
    .container{display:grid;grid-template-columns:repeat(2, 1fr);width:100%;}
    .container .columnleft, .container .columncenter{width:100%;box-sizing:border-box;}
    .container .columnright{width:100%;grid-column:1/3;box-sizing:border-box;}
}
@media (max-width:767px){
    .container{display:flex;flex-direction:column;}
    .container .columnleft, .container .columncenter, .container .columnright{width:100%;box-sizing:border-box;}
    h2{line-height:1.3;height:auto;}
}