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<! carousel-->
<div  class="container bg-danger">
<div class="row">
          <div class=".col-4 mt-3 mr-4">
        <div class="boxonee ">teste xd</div>
      </div>
 <div class=".col-4">
 <div id="carouselExampleCaptions" class="carousel slide mt-3 " data-ride="carousel">
                <ol class="carousel-indicators">
                  <li data-target="#carouselExampleCaptions" data-slide-to="0" class=""></li>
                  <li data-target="#carouselExampleCaptions" data-slide-to="1" class=""></li>
                  <li data-target="#carouselExampleCaptions" data-slide-to="2" class="active"></li>
                </ol>
                <div class="carousel-inner" role="listbox">
                  <div class="carousel-item">
                    <img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=777&fg=555&text=First slide" alt="" src="images/sd1.png" data-holder-rendered="true"> 
                  </div>
                  <div class="carousel-item">
                    <img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=666&fg=444&text=Second slide" alt="" src="images/sd2.png" data-holder-rendered="true">
                  </div>
                  <div class="carousel-item active">
                    <img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=555&fg=333&text=Third slide" alt="" src="images/sd1.png" data-holder-rendered="true">
                  </div>
               </div> 
              </div>
  </div>
      <div class=".col-4">
        <div class="boxone mt-3 ml-4">teste 1</div>
        <div class="boxone  mt-3 ml-4">teste 2</div>
          <div class="boxone mt-3 ml-4">teste 2</div>
      </div>
</div>
</div>
css:
body {
    margin:0;
    padding:0;
    background:#e84118;
}
img.logo{
    width: 250px;
    height: 70px;
}
.prodf {
    display:flex
}
.form-control-borderless {
    border: none;
}
.form-control-borderless:hover, .form-control-borderless:active, .form-control-borderless:focus {
    border: none;
    outline: none;
    box-shadow: none;
}
.minhaconta{
    margin-top: 10px;
}
.dropspc{
    background: #000;
}
/* actual dropdown animation */
.dropdown .dropdown-menu {
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -ms-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
    max-height: 0;
    display: block;
    overflow: hidden;
    opacity: 0;
}
.dropdown.open .dropdown-menu {
    max-height: 400px;
    background: #000;
    width: 200px;
    opacity: 1;
}
.boxone{
    width: 270px;
    height: 150px;
    background: #000;
}
.boxonee{
    width: 270px;
    height: 150px;
    background: #000;
}
/*import*/
.xd .carousel-item {
    overflow: hidden;
    width: 100%;
    height: 100%; /* aqui vc ajusta a altura do slider */
}
.xd .carousel-item img {
    width: 100%;
    /* transform: translateY(-50%)  habilitar se quiser pocicionar o meio da imagem no slider*/
}
/*import*/
I’m having this problem with these grid I’m trying to use ml-4 and the boxes are coming down.

Dude if you’re using some additional CSS also put in your answer to help you answer.
– hugocsl
added, but the css had no nd of more
– Felipe