.customer-account-login .login-container .block.redirected-from-checkout {
    width: 50%;
}
.customer-account-login .login-container .block-customer-login.redirected-from-checkout {
    float: left;
}
.customer-account-login .login-container .form-create-account {
    width: 50%;
    float: right;
}
.customer-account-login .login-container .block:nth-child(2) + * {
    clear: none;
}
.customer-account-login .login-container .block:not('.redirected-from-checkout'):nth-child(2) + * {
    clear: both;
}