3 код и тут есть конфликты и я не знаю как их решить.
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<title>index</title>
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* {
margin: 0;
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.blok {
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display: flex;
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display: flex;
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background-size: 95%;
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width: 54px;
height: 54px;
cursor: pointer;
background-image: url(https://rakipov.ru/files/minus_ikonka.svg);
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background-position: center;
background-size: 95%;
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<div class="karta">
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<div class="upravlenie_blok">
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