.modal {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1050;
    display: none;
    overflow: hidden;
    outline: 0;
}

@media (min-width: 576px) {
    .modal-dialog {
        width: 300px;
        margin: 30px auto;
    }
    .modal-content {
        -webkit-box-shadow: 0 5px 15px rgba(0, 0, 0, .5);
        box-shadow: 0 5px 15px rgba(0, 0, 0, .5);
    }
    .modal-lg {
        width: 600px;
    }
}

.modal-dialog {
    position: relative;
    width: auto;
    margin: 10px;
}

    .modal-content {
		body{text-algin:center}
        position: relative;
        display: flex;
        flex-direction: column;
        width: 50%;
		transform:translate(50%,10%);
		
        pointer-events: auto;
        background-color: #fff;
        background-clip: padding-box;
        border: 1px solid rgba(0,0,0,.2);
        border-radius: .3rem;
        outline: 0;
    }

    .modal-header {
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        padding: 1rem;
        border-bottom: 1px solid #e9ecef;
        border-top-left-radius: .3rem;
        border-top-right-radius: .3rem;

    }

    .modal-header .close {
        padding: 1rem;
        margin: -1rem -1rem -1rem auto;
    }


    .close {
        -webkit-appearance: none;
        padding: 0;
        cursor: pointer;
        background: 0 0;
        border: 0;
        float: right;
        font-size: 21px;
        font-weight: 700;
        line-height: 1;
        color: #000;
        text-shadow: 0 1px 0 #fff;
        filter: alpha(opacity=20);
        opacity: .2;
    }

    .modal-body {
        position: relative;
        padding: 15px;
    }
    img {
        vertical-align: middle;
        border: 0;
    }

    .modal-footer {
        padding: 15px;
        text-align: right;
        border-top: 1px solid #e5e5e5;
    }


    .btn {
        display: inline-block;
        padding: 6px 12px;
        margin-bottom: 0;
        font-size: 14px;
        font-weight: 400;
        line-height: 1.42857143;
        text-align: center;
        white-space: nowrap;
        vertical-align: middle;
        -ms-touch-action: manipulation;
        touch-action: manipulation;
        cursor: pointer;
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
        background-image: none;
        border: 1px solid transparent;
        border-radius: 4px;
    }


#back{
    width: 50%;
    height: 50%;
    background: rgba(0,0,0,.5);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100%;
    display: none;
}