html - When I put my buttons on div CSS doesn't work -


i want buttons auto middle on page, can't bec of when put buttons on div, doesnt work. helping

   *:focus{        outline:0px;     }     body{        width:100%;     }     .buttons{        width:200px;        margin: 0 auto;     }              .tr,.eu{        width:65px;height:30px;        border-radius: 5px;        border-color:transparent;        background-color:#00405d;        color:white;        font-weight:500;     }     .tr:active,.eu:active{        padding:3px;     }       .eu {display: none;}       .eu:focus ~ .tr {display: none;}     .tr:focus ~ .tr {display: block;}     .tr:focus ~ .eu {display: none;}     .eu:focus ~ .eu {display: block;}
first 2 buttons  <button type="button" class="eu" name="button">eu</button> working  <button type="button" class="tr" name="button">tr</button> working  first 2 buttons  <br>  <br>    other 2 buttons in div        <!--but doesnt work  bec of in div -->        <div>           <button type="button" class="eu" name="button">eu</button>doesnt work on div           <button type="button" class="tr" name="button">tr</button>doesnt work on div        </div>        <!--but doesnt work bec of in div -->  other 2 buttons in div          <br>        <br>        <br>          result:        <div class="tr">           tr        </div>        <div class="eu">           eu        </div>

add following css rule codes

button.eu, button.tr {   border: solid red;   transform: translate(-50%, 0%);   -webkit-transform: translate(-50%, 0%);   -moz-transform: translate(-50%, 0%);   -ms-transform: translate(-50%, 0%);   -o-transform: translate(-50%, 0%);   position: relative;   left: 50%; } #btn_container {   position: relative; }

snippet below

var eu_btns = document.getelementsbyclassname("eu");  var tr_btns = document.getelementsbyclassname("tr");  var div1 = document.getelementsbyclassname("tr")[0];  var div2 = document.getelementsbyclassname("eu")[0];  (var x = 0; x < eu_btns.length; ++x) {    eu_btns[x].addeventlistener("click", eu_click)  }  (var x = 0; x < tr_btns.length; ++x) {    tr_btns[x].addeventlistener("click", tr_click)  }    function eu_click() {    div2.style.display = "inline-block";    div1.style.display = "none";    }    function tr_click() {    div1.style.display = "inline-block";    div2.style.display = "none";    }
*:focus {    outline: 0px;  }  body {    width: 100%;  }  .buttons {    width: 200px;    margin: 0 auto;  }  .tr,  .eu {    width: 65px;    height: 30px;    border-radius: 5px;    border-color: transparent;    background-color: #00405d;    color: white;    font-weight: 500;  }  .eu {    display: none;  }  .eu:focus ~ .tr {    display: none;  }  .tr:focus ~ .tr {    display: block;  }  .tr:focus ~ .eu {    display: none;  }  .eu:focus ~ .eu {    display: block;  }  button.eu,  button.tr {    border: solid red;    transform: translate(-50%, 0%);    -webkit-transform: translate(-50%, 0%);    -moz-transform: translate(-50%, 0%);    -ms-transform: translate(-50%, 0%);    -o-transform: translate(-50%, 0%);    position: relative;    left: 50%;  }  #btn_container {    position: relative;  }  .tr,  .eu {    display: inline-block;  }
<button type="button" class="tr" name="button">tr</button>  <!--working -->    <!--but doesnt work  bec of in div -->  <div id="btn_container">    <button type="button" class="eu" name="button">eu</button>    <button type="button" class="tr" name="button">tr</button>  </div>  <!--but doesnt work bec of in div -->    <br>  <br>  <br>    <div class="tr">    tr  </div>  <div class="eu">    eu  </div>


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