<div class="wrapper">
  <div class="box">
    <div class="element" contenteditable>margin auto in position</div>
  </div>
</div>

<div class="form">
  <div class="control">
    <input type="checkbox" class="checkbox" id="margin-left" name="margin-left">
    <label for="margin-left">margin-left: auto</label>
  </div>
  <div class="control">
    <input type="checkbox" class="checkbox" id="margin-right" name="margin-right">
    <label for="margin-right">margin-right: auto</label>
  </div>
  <div class="control">
    <input type="checkbox" class="checkbox" id="margin-top" name="margin-top">
    <label for="margin-top">margin-top: auto</label>
  </div>
  <div class="control">
    <input type="checkbox" class="checkbox" id="margin-bottom" name="margin-bottom">
    <label for="margin-bottom">margin-bottom: auto</label>
  </div>
</div>

@import url("https://fonts.googleapis.com/css?family=Gochi+Hand");

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  padding: 0;
  background-color: #291642;
  font-family: "Gochi Hand", sans-serif;
  color: #fff;
  font-size: 130%;
  letter-spacing: 0.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: 100vw;
  min-height: 100vh;
  padding: 10px;
}

.form {
  padding: 20px;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.control {
  margin: 20px 10px;
  display: flex;
  align-items: center;
}

.checkbox {
  margin: 0 5px 0 0;
}

.wrapper {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.box {
  width: 60vw;
  min-height: 50vh;
  border-radius: 5px;
  padding: 30px;
  border: 1px dashed #fff;
  position: relative;
}

.element {
  text-align: center;
  background-color: #f36;
  width: 300px;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 5px;
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
}

const checkboxs = document.querySelectorAll(".checkbox");
const elemment = document.querySelector(".element");

checkboxs.forEach((checkbox) =>
  checkbox.addEventListener("change", (e) => {
    if (e.target.checked) {
      if (e.target.name === "margin-left") {
        elemment.style.marginLeft = `auto`;
      }

      if (e.target.name === "margin-right") {
        elemment.style.marginRight = `auto`;
      }

      if (e.target.name === "margin-top") {
        elemment.style.marginTop = `auto`;
      }

      if (e.target.name === "margin-bottom") {
        elemment.style.marginBottom = `auto`;
      }
    } else {
      if (e.target.name === "margin-left") {
        elemment.style.marginLeft = `unset`;
      }

      if (e.target.name === "margin-right") {
        elemment.style.marginRight = `unset`;
      }

      if (e.target.name === "margin-top") {
        elemment.style.marginTop = `unset`;
      }

      if (e.target.name === "margin-bottom") {
        elemment.style.marginBottom = `unset`;
      }
    }
  })
);