Первый код
В нем хорошо работает выделение объектов на карте и если начать увеличивать масштаб ctrl+ или ctrl- то границы объектов так же будет увеличивается или уменьшатся
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<head>
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<title>index</title>
<meta name="viewport" content="width=device-width,initial-scale=1">
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
.blok {
margin: 40px auto 0px;
max-width: 900px;
display: flex;
justify-content: center;
align-items: center;
flex-direction: column;
}
.karta {
width: 100%;
height: 400px;
cursor: crosshair;
overflow: hidden;
padding: 0;
margin: 0;
touch-action: none;
border: 10px solid #7F7F7F;
}
.karta img {
padding: 0;
margin: 0;
display: block;
}
.upravlenie_blok {
width: 148px;
height: 54px;
margin: 40px auto 0px;
display: flex;
justify-content: center;
align-items: center;
margin: 10px 10px 10px 10px;
}
.plus {
width: 54px;
height: 54px;
cursor: pointer;
margin: 0px 20px 0px 0px;
background-image: url(https://rakipov.ru/files/plus_ikonka.svg);
background-repeat: no-repeat;
background-position: center;
background-size: 95%;
}
.minus {
width: 54px;
height: 54px;
cursor: pointer;
background-image: url(https://rakipov.ru/files/minus_ikonka.svg);
background-repeat: no-repeat;
background-position: center;
background-size: 95%;
}
.minus.dis,
.plus.dis {
opacity: .2;
}
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<body>
<div class="blok">
<div class="karta">
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<div class="upravlenie_blok">
<div class="plus dis"></div>
<div class="minus"></div>
</div>
</div>
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