.mb-3, .my-3 {
    margin-bottom: 1rem!important;
}
.input-group {
    position: relative;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    -ms-flex-align: stretch;
    align-items: stretch;
    width: 100%;
}
/*.custom-file {
    position: relative;
    display: inline-block;
    width: 100%;
    height: calc(1.5em + .75rem + 2px);
    margin-bottom: 0;
} */
.input-group>.custom-file {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
}

.input-group>.custom-file, .input-group>.custom-select, .input-group>.form-control, .input-group>.form-control-plaintext {
    position: relative;
    -ms-flex: 1 1 auto;
    flex: 1 1 auto;
    width: 1%;
    margin-bottom: 0;
}

.custom-file-input:lang(en)~.custom-file-label::after {
    content: "";
}
.custom-file-input {
    position: relative;
    z-index: 2;
    width: 100%;
    height: calc(1.5em + .75rem + 2px);
    margin: 0;
    opacity: 0;
}
.custom-file-label {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1;
    height: calc(1.5em + .75rem + 2px);
    padding: .375rem .75rem;
    font-weight: 400;
    line-height: 1.5;
/*    border: 1px solid #ced4da;
    border-radius: .25rem;*/
    color: rgba(32, 30, 36, .5);
    background: #ECEAE6;
}
.custom-file-label::after {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 3;
    display: block;
    height: calc(1.5em + .75rem);
    padding: .375rem .75rem;
    line-height: 1.5;
    color: #495057;
    content: "Обзор";
    background: #DCD9D5;
    border-left: inherit;
/*    border-radius: 0 .25rem .25rem 0;*/
}
